The Influence of Annealing Temperature on the Magnetic Properties of Mn0.5Co0.5Fe2O4 Nanoferrites Synthesized via Mechanical Milling Method

Abdallah, H. M. I.; Moyo, T.

doi:10.1007/s10948-012-1878-5

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…Many synthesis methods have been proposed for the synthesis of spinel ferrites with single or multiple divalent cations, from co-precipitation to solvothermal methods . In particular, Co/Mn mixed ferrites have been synthesized by high-temperature thermal decomposition, glycothermal process, − polyethylene glycol-assisted hydrothermal method, polyol method, mechanical milling, , co-precipitation method, − ceramic method, and self-combustion. , …”

Section: Introductionmentioning

confidence: 99%

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

et al. 2021

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Understanding the complex link among composition, microstructure, and magnetic properties paves the way to the rational design of well-defined magnetic materials. In this context, the evolution of the magnetic and structural properties in a series of oleate-capped manganese-substituted cobalt ferrites (Mn x Co 1−x Fe 2 O 4 ) with variable Co/ Mn molar ratios is deeply discussed. Single-phase ferrites with similar crystallite and particle sizes (about 10 nm), size dispersity (14%), and weight percentage of capping oleate molecules (17%) were obtained by an oleate-based solvothermal approach. The similarities among the samples permitted the interpretation of the results exclusively on the basis of the actual composition, beyond the other parameters. The temperature and magnetic field dependences of the magnetization were studied together with the interparticle interactions by DC magnetometry. Characteristic temperatures (T max , T diff , and T b ), coercivity, anisotropy field, and reduced remanence were found to be affected by the Co/Mn ratio, mainly due to the magnetic anisotropy, interparticle interactions, and particle volume distribution. In addition, the cobalt and manganese distributions were hypothesized on the basis of the chemical composition, the inversion degree obtained by 57 Fe Mossbauer spectroscopy, the anisotropy constant, and the saturation magnetization.

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Section: Introductionmentioning

confidence: 99%

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

et al. 2021

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“…As one of nanoarchitectured adsorbents for dyes, Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticle is one of important nanomaterials. Many methods were used to prepare Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticle, such as the solvothermal method [50], hydrothermal method [51], the co-precipitation method [52], mechanical milling and glycolthermal process [53], highenergy ball milling [54], However, the processes of the above methods were often complex, especially the pretreatment processes, and most of the methods needed organic matters to disperse metal ions and formed complexes, which would lead to higher preparation costs. The rapid combustion method is a novel, facile, and convenient technique with the unique solution combustion and calcination process, a short pretreatment and a short preparation time, which doesn't need other dispersants, and the production is homogeneous.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of methyl blue onto magnetic Ni0.5Zn0.5Fe2O4 nanoparticles prepared by the rapid combustion process

et al. 2013

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A rapid combustion process for the preparation of magnetic Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles was introduced, which was composed of the preparation process of solution, combustion process and calcination process. The structure and properties of the as-prepared product were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and vibrating sample magnetometer. The results revealed that the volume of absolute alcohol and the calcination temperature were two key parameters for the preparation of Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles. With the volume of absolute alcohol increasing from 15 to 100 mL, the particle size of Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles calcined at 400 C for 2 h increased from 18 to 25 nm, and the saturation magnetization increased from 3.4 to 66.3 Am 2 /kg; while with the calcination temperature increasing from 400 to 700 C with 20 mL absolute alcohol, the particle size increased from 20 nm to 47 nm, the saturation magnetizations increased from 13.1 to 66.0 Am 2 /kg, and the specific surface area decreased from 102.99 to 0.13 m 2 /g. The adsorption characteristics of methyl blue (MB) onto Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles at room temperature were investigated, and the regression equation was found in good agreement with the pseudo-second-order adsorption kinetics model with the initial MB concentrations of 50-200 mg/L; the adsorption equilibrium data of MB onto Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles at room temperature were analyzed with Langmuir, Freundlich and Temkin models, and the adsorption isotherm was most effectively described by the Temkin model based on the value of the correlation coefficient (0.9931); the effect of pH on the adsorption of MB was examined, and the reusability of Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles for adsorbing of MB revealed their excellent removal efficiency. HIGHLIGHTS• Magnetic Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles are prepared via a rapid combustion process. • They show a high methyl blue (MB) absorption capacity at room temperature. • The pseudo-second-order kinetic model can describe the adsorption of MB.• Temkin model can explain the adsorption isotherm of MB onto Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticles.

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“…As one of nanoarchitectured adsorbents for dyes, Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticle is one of important nanomaterials. Many methods were used to prepare Mn 0.5 Co 0.5 Fe 2 O 4 nanoparticle, such as the solvothermal method , hydrothermal method , the co‐precipitation method , mechanical milling and glycolthermal process , high‐energy ball milling , However, the processes of the above methods were often complex, especially the pretreatment processes, and most of the methods needed organic matters to disperse metal ions and formed complexes, which would lead to higher preparation costs. The rapid combustion method is a novel, facile, and convenient technique with the unique solution combustion and calcination process, a short pretreatment and a short preparation time, which doesn't need other dispersants, and the production is homogeneous.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of methyl blue onto magnetic Mn_0.5Co_0.5Fe₂O₄ nanoparticles prepared via a rapid combustion process

Liu

et al. 2018

Env Prog and Sustain Energy

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A rapid combustion process for the preparation of magnetic Mn0.5Co0.5Fe2O4 nanoparticles was introduced, which was composed of the preparation process of solution, combustion process and calcination process. The structure and properties of the as‐prepared product were investigated by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and vibrating sample magnetometer. The results revealed that the volume of absolute alcohol and the calcination temperature were two key parameters for the preparation of Mn0.5Co0.5Fe2O4 nanoparticles. With the volume of absolute alcohol increasing from 15 to 100 mL, the particle size of Mn0.5Co0.5Fe2O4 nanoparticles calcined at 400°C for 2 h increased from 18 to 25 nm, and the saturation magnetization increased from 3.4 to 66.3 Am2/kg; while with the calcination temperature increasing from 400 to 700°C with 20 mL absolute alcohol, the particle size increased from 20 nm to 47 nm, the saturation magnetizations increased from 13.1 to 66.0 Am2/kg, and the specific surface area decreased from 102.99 to 0.13 m2/g. The adsorption characteristics of methyl blue (MB) onto Mn0.5Co0.5Fe2O4 nanoparticles at room temperature were investigated, and the regression equation was found in good agreement with the pseudo‐second‐order adsorption kinetics model with the initial MB concentrations of 50–200 mg/L; the adsorption equilibrium data of MB onto Mn0.5Co0.5Fe2O4 nanoparticles at room temperature were analyzed with Langmuir, Freundlich and Temkin models, and the adsorption isotherm was most effectively described by the Temkin model based on the value of the correlation coefficient (0.9931); the effect of pH on the adsorption of MB was examined, and the reusability of Mn0.5Co0.5Fe2O4 nanoparticles for adsorbing of MB revealed their excellent removal efficiency. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S277–S287, 2019

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The Influence of Annealing Temperature on the Magnetic Properties of Mn0.5Co0.5Fe2O4 Nanoferrites Synthesized via Mechanical Milling Method

Cited by 10 publications

References 18 publications

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

Adsorption characteristics of methyl blue onto magnetic Ni0.5Zn0.5Fe2O4 nanoparticles prepared by the rapid combustion process

Adsorption characteristics of methyl blue onto magnetic Mn_0.5Co_0.5Fe₂O₄ nanoparticles prepared via a rapid combustion process

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The Influence of Annealing Temperature on the Magnetic Properties of Mn0.5Co0.5Fe2O4 Nanoferrites Synthesized via Mechanical Milling Method

Cited by 10 publications

References 18 publications

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped MnxCo1–xFe2O4 Nanoparticles

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped MnxCo1–xFe2O4 Nanoparticles

Adsorption characteristics of methyl blue onto magnetic Ni0.5Zn0.5Fe2O4 nanoparticles prepared by the rapid combustion process

Adsorption characteristics of methyl blue onto magnetic Mn0.5Co0.5Fe2O4 nanoparticles prepared via a rapid combustion process

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Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn_xCo_1–xFe₂O₄ Nanoparticles

Adsorption characteristics of methyl blue onto magnetic Mn_0.5Co_0.5Fe₂O₄ nanoparticles prepared via a rapid combustion process